PE pipe connection mode: Pipe series with outer diameter of 50mm or less adopt hot-melt pipe fittings for socket welding, and pipes of 50mm or more are electrically hot-melt pipe fittings or electric hot-melt butt welded joints.
First, PE water supply performance characteristics
1. More than 50 years of service life.
2, very low permeability.
3, good sanitation, solve the secondary pollution of applied water, sanitation in line with GB/T17219-1998 safety appraisal regulations.
4, resistant to a variety of chemical media, no point chemical corrosion.
5, the inner wall is smooth, the friction coefficient is low, the medium passing ability is correspondingly improved, and has excellent wear resistance.
6, flexibility, high impact strength, resistant to strong earthquakes and distortion.
7, light weight, convenient transportation and installation.
8. Unique electric hot-melt welding and hot-melt butt welding technology, and the interface strength is higher than the pipe body strength, ensuring the safety and reliability of the interface.
9. The welding process is simple, the construction is convenient, and the comprehensive construction cost is low.
10. Green and environmental protection.
Second, the performance of PE pipe
1. Softness: Because PE-RT is softer. Therefore, no special tools are needed for construction, so the construction cost is relatively low.
2. Thermal conductivity: The pipe used for floor heating needs good thermal conductivity. PE-RT has good thermal conductivity and its thermal conductivity is twice that of PP-R and PP-B pipes. Ideal for floor heating.
3. High temperature resistance: PE-RT can withstand high temperatures up to 90 ° C, while PEX can only reach 65 ° C.
4, low temperature thermal shock resistance: PE--RT's low temperature impact resistance is better. The pipe is not easily damaged by impact during construction in winter, which increases the flexibility of construction arrangements.
5. Environmental protection: PE-RT and PP-R can be recycled and used without polluting the environment. And PEX can not be recycled to produce secondary pollution;
6, processing performance stability: PEX has the problem of controlling the degree of crosslinking and cross-linking uniformity, processing is complex and processing directly affects the performance of the pipe. The PE-RT and PP-R are easy to process, and the performance of the pipe is basically determined by the raw materials, and the performance is relatively stable. PE-RT is short for Polyethylene Raised Temperature. It is a medium density ethylene-octene copolymer specially designed for heating systems. It is a copolymer of ethylene monomer and 1-octene monomer. It has a narrow molecular weight distribution. The special molecular structure of octene uniformly distributed on the polymer main chain, which not only retains the original sanitary properties and processing properties of the PE tube, but also strengthens a new type of special material for high temperature durability. The pipe produced from this raw material is mainly used in the field of hot water/heating pipes in buildings. Its durability can be the same as that of buildings, with a minimum of 50 years, and also has good recovery and high added value.
Third, the PE pipe connection steps:
1. Clamp and clean the port
2, adjust and smooth the port
3, the port is straight
4, pressure welding
5, pressure relief cooling
Fourth, the application range of PE pipeline
1. Town and rural water supply pipeline system
PE pipe is non-toxic and non-fouling. It is more suitable for urban and rural water supply main pipe and buried pipe. It is safe, sanitary, economical, convenient for construction and long service life.
2. Town gas pipeline
Because PE pipe has better creep resistance and economy, it gradually replaces the ink pipe for urban gas transportation.
3, used in the old network reconstruction project, without large-scale excavation, convenient construction, low cost, can be widely used in urban area network transformation.
4. Industrial raw material conveying pipeline
Chemical raw materials, chemical fiber, food, forestry, pharmaceutical, light industry, paper, metallurgy and other industrial raw materials.
5, landscaping water supply pipe network
Landscaping requires a large number of water pipes, and the flexibility and low cost of PE pipes make it the best choice.
6. Pipe for sewage discharge
PE pipes have unique corrosion resistance and can be used for industrial wastewater, sewage discharge, and low cost and maintenance costs.
7. Mineral sand and mud transportation
PE pipes are highly resistant to stress, abrasion and corrosion, and can be widely used to transport ore, coal ash and river dredging mud.
8. Agricultural irrigation pipeline
PE pipe has smooth inner wall, large flow, cross-road construction and good impact resistance. It is an ideal pipe for agricultural irrigation.
9, marine pipeline
The FE tube is light in weight and convenient to connect, and can be widely used for water supply and drainage inside large ships.
10. Pipeline for seawater desalination
PE pipe has long service life and high cost performance, and is widely used in seawater desalination projects.
11. Rural biogas pipeline
Due to its good economics, PE is being used in large areas in rural biogas projects.
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